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Magnetism and Matter - 05
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Q1. A material is placed in a magnetic field and it is thrown out of it. Then the material is
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1 point
non-magnetic
ferromagnetic
paramagnetic
diamagnetic
Q2. A diamagnetic material in a magnetic field moves
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perpendicular to field
from stronger to weaker parts of field
from weaker to stronger parts of the field
None of them
Q3. A temporary magnet is made of
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Steel
stainless steel
soft iron
cast iron
Q4. The hysteresis cycle for the material of permanent magnet is
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short and wide
tall and narrow
tall and wide
short and narrow
Q5. Materials suitable for permanent magnet, must have which of the following properties?
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High retentivity, low coercivity and high permeability.
Low retentivity, low coercivity and low permeability.
Low retentivity, high coercivity and low permeability.
High retentivity, high coercivity and high permeability
Q6. Which of the following is the most suitable material for making permanent magnet ?
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Steel
Soft iron
Copper
Nickel
Q7. The materials suitable for making electromagnets should have
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high retentivity and high coercivity
low retentivity and low coercivity
high retentivity and low coercivity
low retentivity and high coercivity
Q8. Core of elctromagnets are made of ferromagnetic materials which have
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high permeability and high retentivity
low permeability and high retentivity
high permeability and high retentivity.
low permeability and low retentivity
Q9. Permanent magnets are the substances having the property of
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ferromagnetism at room temperature for a long period of time
paramagnetism at room temperature for a long period of time
anti ferromagnetism at room temperature for a long period of time
diamagnetism at room temperature for a long period of time
Q10. Identify the mismatched pair
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Hard magnet - Alnico
Soft magnet - Soft iron
Bar magnet - Equivalent solenoid
Permanent magnet - Loud speaker
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